diff options
Diffstat (limited to 'gcc-4.9/libstdc++-v3/include/bits/allocator.h')
-rw-r--r-- | gcc-4.9/libstdc++-v3/include/bits/allocator.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/gcc-4.9/libstdc++-v3/include/bits/allocator.h b/gcc-4.9/libstdc++-v3/include/bits/allocator.h new file mode 100644 index 0000000..e293c54 --- /dev/null +++ b/gcc-4.9/libstdc++-v3/include/bits/allocator.h @@ -0,0 +1,221 @@ +// Allocators -*- C++ -*- + +// Copyright (C) 2001-2014 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +/* + * Copyright (c) 1996-1997 + * Silicon Graphics Computer Systems, Inc. + * + * Permission to use, copy, modify, distribute and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appear in all copies and + * that both that copyright notice and this permission notice appear + * in supporting documentation. Silicon Graphics makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + */ + +/** @file bits/allocator.h + * This is an internal header file, included by other library headers. + * Do not attempt to use it directly. @headername{memory} + */ + +#ifndef _ALLOCATOR_H +#define _ALLOCATOR_H 1 + +#include <bits/c++allocator.h> // Define the base class to std::allocator. +#include <bits/memoryfwd.h> +#if __cplusplus >= 201103L +#include <type_traits> +#endif + +namespace std _GLIBCXX_VISIBILITY(default) +{ +_GLIBCXX_BEGIN_NAMESPACE_VERSION + + /** + * @addtogroup allocators + * @{ + */ + + /// allocator<void> specialization. + template<> + class allocator<void> + { + public: + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef void* pointer; + typedef const void* const_pointer; + typedef void value_type; + + template<typename _Tp1> + struct rebind + { typedef allocator<_Tp1> other; }; + +#if __cplusplus >= 201103L + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 2103. std::allocator propagate_on_container_move_assignment + typedef true_type propagate_on_container_move_assignment; +#endif + }; + + /** + * @brief The @a standard allocator, as per [20.4]. + * + * See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt04ch11.html + * for further details. + * + * @tparam _Tp Type of allocated object. + */ + template<typename _Tp> + class allocator: public __allocator_base<_Tp> + { + public: + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef _Tp* pointer; + typedef const _Tp* const_pointer; + typedef _Tp& reference; + typedef const _Tp& const_reference; + typedef _Tp value_type; + + template<typename _Tp1> + struct rebind + { typedef allocator<_Tp1> other; }; + +#if __cplusplus >= 201103L + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 2103. std::allocator propagate_on_container_move_assignment + typedef true_type propagate_on_container_move_assignment; +#endif + + allocator() throw() { } + + allocator(const allocator& __a) throw() + : __allocator_base<_Tp>(__a) { } + + template<typename _Tp1> + allocator(const allocator<_Tp1>&) throw() { } + + ~allocator() throw() { } + + // Inherit everything else. + }; + + template<typename _T1, typename _T2> + inline bool + operator==(const allocator<_T1>&, const allocator<_T2>&) + { return true; } + + template<typename _Tp> + inline bool + operator==(const allocator<_Tp>&, const allocator<_Tp>&) + { return true; } + + template<typename _T1, typename _T2> + inline bool + operator!=(const allocator<_T1>&, const allocator<_T2>&) + { return false; } + + template<typename _Tp> + inline bool + operator!=(const allocator<_Tp>&, const allocator<_Tp>&) + { return false; } + + /// @} group allocator + + // Inhibit implicit instantiations for required instantiations, + // which are defined via explicit instantiations elsewhere. +#if _GLIBCXX_EXTERN_TEMPLATE + extern template class allocator<char>; + extern template class allocator<wchar_t>; +#endif + + // Undefine. +#undef __allocator_base + + // To implement Option 3 of DR 431. + template<typename _Alloc, bool = __is_empty(_Alloc)> + struct __alloc_swap + { static void _S_do_it(_Alloc&, _Alloc&) _GLIBCXX_NOEXCEPT { } }; + + template<typename _Alloc> + struct __alloc_swap<_Alloc, false> + { + static void + _S_do_it(_Alloc& __one, _Alloc& __two) _GLIBCXX_NOEXCEPT + { + // Precondition: swappable allocators. + if (__one != __two) + swap(__one, __two); + } + }; + + // Optimize for stateless allocators. + template<typename _Alloc, bool = __is_empty(_Alloc)> + struct __alloc_neq + { + static bool + _S_do_it(const _Alloc&, const _Alloc&) + { return false; } + }; + + template<typename _Alloc> + struct __alloc_neq<_Alloc, false> + { + static bool + _S_do_it(const _Alloc& __one, const _Alloc& __two) + { return __one != __two; } + }; + +#if __cplusplus >= 201103L + template<typename _Tp, bool + = __or_<is_copy_constructible<typename _Tp::value_type>, + is_nothrow_move_constructible<typename _Tp::value_type>>::value> + struct __shrink_to_fit_aux + { static bool _S_do_it(_Tp&) noexcept { return false; } }; + + template<typename _Tp> + struct __shrink_to_fit_aux<_Tp, true> + { + static bool + _S_do_it(_Tp& __c) noexcept + { + __try + { + _Tp(__make_move_if_noexcept_iterator(__c.begin()), + __make_move_if_noexcept_iterator(__c.end()), + __c.get_allocator()).swap(__c); + return true; + } + __catch(...) + { return false; } + } + }; +#endif + +_GLIBCXX_END_NAMESPACE_VERSION +} // namespace std + +#endif |